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Mashed potato casserole in a baking dish with a serving spoon in the dish.
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Cheesy Mashed Potato Casserole With Buttery Crunch Topping

Creamy, cheesy, buttery perfection! This make-ahead mashed potato casserole is the ultimate comforting side, perfect for the holidays!
Prep Time30 minutes
Cook Time45 minutes
Total Time1 hour 15 minutes
Course: holiday side, Potato side
Cuisine: American
Servings: 8 Servings
Calories: 681kcal
Author: Marisa Franca @ All Our Way

Ingredients

Cheesy Mashed Potatoes:

  • 4 lb Yukon Gold potatoes peeled and cubed
  • 4 tablespoon salted butter
  • 8 oz cream cheese at room temperature
  • ½ cup sour cream or plain Greek yogurt
  • 1 tablespoon onion powder
  • 1 tablespoon garlic powder
  • 1 tablespoon fresh thyme leaves
  • 1 teaspoon smoked paprika
  • ¼ teaspoon cayenne pepper
  • 1-2 cups grated Monterey Jack cheese
  • sea salt and pepper
  • 1 ½ cup whole milk
  • 2 eggs beaten

The Crunchy Topping

  • 6 tablespoon salted butter
  • ¾ cup Panko bread crumbs
  • ¾ cup crushed corn flakes
  • 2 teaspoon garlic powder
  • ⅔ cup grated Gruyère

Instructions

The cheesy mashed potatoes:

  • Preheat the oven to 375°F. Butter a 9x13-inch casserole dish.
  • In a Dutch oven, cover the potatoes with water and bring to a boil over high heat until tender, 10-15 minutes. Drain and add them back into the hot pot.
  • Grab a hand mixer or a potato masher. Mash the hot potatoes with butter, cream cheese, and sour cream. Add onion powder, garlic powder, thyme, paprika, cayenne, Monterey Jack cheese, salt, and pepper.
  • Gradually mix in the milk and eggs; don't over-mix.
  • Scrape the potatoes into the buttered casserole dish.

The crunchy topping:

  • Melt the butter in a skillet over medium heat until it begins to brown, 2 to 3 minutes.
  • Remove from heat and stir in panko crumbs, crushed corn flakes, and garlic—season with salt and pepper.
  • Sprinkle over the potatoes. Top with grated Gruyère.
  • Bake until golden and crisp, 30 to 40 minutes. Top with parsley or thyme. Serve them up and enjoy!

Notes

💛 For extra tips, cozy serving ideas, and my favorite Italian twists, be sure to peek at the full post above — mangia bene e sorridi sempre (eat well and always laugh)! 

Nutrition

Calories: 681kcal | Carbohydrates: 69g | Protein: 19g | Fat: 38g | Saturated Fat: 22g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 10g | Trans Fat: 1g | Cholesterol: 146mg | Sodium: 621mg | Potassium: 1209mg | Fiber: 6g | Sugar: 8g | Vitamin A: 1845IU | Vitamin C: 51mg | Calcium: 373mg | Iron: 9mg